<![CDATA[Critical thinking is one of the essential competencies required in 21st-century learning. However, students' critical thinking skills remain relatively low due to teacher-centered learning practices. This study aimed to determine the effect of a Deep Learning approach assisted by Web Blooket on students' critical thinking skills in Geography learning. The research employed a quantitative approach using a Quasi Experimental Design with a Pretest-Posttest Control Group Design. The sample consisted of class XI F4 as the experimental class and class XI F6 as the control class at SMA Negeri 1 Sitiung. Data were collected using critical thinking tests based on Ennis indicators and analyzed through normality tests, homogeneity tests, N-Gain tests, and Independent Sample t-tests. The results showed that students' critical thinking skills increased after the implementation of Deep Learning assisted by Web Blooket. The hypothesis test yielded a significance value of 0.004 (<0.05), indicating a significant effect of the treatment on students' critical thinking skills. The highest increase occurred in the Advanced Clarification indicator (67%), while the lowest increase was found in the Basic Support indicator (14%). Therefore, the Deep Learning approach assisted by Web Blooket can be used as an effective alternative to improve students' critical thinking skills in Geography learning]]>
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